Two of the most well-known applications of the pure elements are rubidium and caesium atomic clocks, of which caesium atomic clocks are the most accurate representation of time known as of.

Two cellular phone providers cover most of the country.

Two of the most common polysaccharides are cellulose and glycogen, both consisting of repeating glucose monomers.

Two million years ago, the only sign of fire is burnt earth with human remains, which most other anthropologists consider to be mere coincidence rather than evidence of intentional fire.

Two thirds of the chemical elements occur on Earth only as compounds, and in the remaining third, often the compound forms of the element are most common.

Two of the most popular are Penny Arcade, focused primarily on video gaming, and User Friendly, which bases its humor on the Internet and other computer-user issues.

Two of Confucius's most famous later followers emphasized radically different aspects of his teachings.

Two volcanoes form the island's most prominent topographic features: La Grille in the north, with an elevation of 1, 000 meters, is extinct and largely eroded ; Kartala in the south, rising to a height of 2, 361 meters, last erupted in 1977.

Two of the most notable differences are that the balls are always played in the same sequence ( blue, red, black, yellow ) throughout the game, and that a ball's " deadness " on other balls is carried over from turn to turn until the ball has been " cleared " by scoring its next hoop.

Two 2008 case studies show that the layout of a system provides a strong correlation to the ease of use for a system and that it proved more beneficial for the design to focus on presenting information in a way that reflected the most important goals and tasks of the user, rather than the structure of the organization.

Two of the most popular of the period were of Pomona ( goddess of orchards ) as a metaphor for Agriculture, and Diana, representing Commerce, which is a perpetual hunt for advantage and profits.

His most celebrated books include the bestselling Green Eggs and Ham, The Cat in the Hat, One Fish Two Fish Red Fish Blue Fish, Horton Hatches the Egg, Horton Hears a Who !, and How the Grinch Stole Christmas !.

Two of the most popular are " OIL RIG " ( Oxidation Is Loss, Reduction Is Gain ) and " LEO " the lion says " GER " ( Lose Electrons: Oxidization, Gain Electrons: Reduction ).

Two instruments, the Berlin questionnaire are the most validated.

Two of the most useful points for diving are the coast off Playa del Matorral in the South, and the zone between Lobos Island and Corralejo in the north.

Two of the most outspoken critics of the guild system were Jean-Jacques Rousseau and Adam Smith, and all over Europe a tendency to oppose government control over trades in favour of laissez-faire free market systems was growing rapidly and making its way into the political and legal system.

Two Pacific Ocean populations are known to exist: one of not more than 130 individuals ( according to the most recent population assessment in 2008 ) whose migratory route is presumed to be between the Sea of Okhotsk and southern Korea, and a larger one with a population between 20, 000 and 22, 000 individuals in the eastern Pacific travelling between the waters off Alaska and Baja California Sur.

Two bodies oversee the administration of the college, the Board of Corporators and the Board of Trustees ; while the Corporators are the official legal owners of the college, in practice most authority is delegated to the Trustees, who are elected by the Corporators.

Two years later, AFI released the list AFI's 100 Years ... 100 Passions honoring the most romantic films for the past 100 years, Harold and Maude ranked # 69.

Two of the most notable Mediterranean civilizations in classical antiquity were the Greek city states and the Phoenicians.

Two deacons go to priest-elect who, at that point, had been standing alone in the middle of the church, and bow him down to the west ( to the people ) and to the east ( to the clergy ), asking their consent by saying “ Command ye !” and then lead him through the holy doors of the altar where the archdeacon asks the bishop ’ s consent, saying, “ Command, most sacred master !” after which a priest escorts the candidate three times around the Holy Table, during which he kisses each corner of the Holy Table as well as the bishop's epigonation and right hand and prostrates himself before the holy table at each circuit.

The most common size has 34 strings: Two octaves below middle C and two and a half above ( ending on A ), although folk or lever harps can usually be found with anywhere from 19 to 40 strings.

Two of the most prominent composers of the Classical period ( music ), Joseph Haydn ( 1732 – 1809 ) and Wolfgang Amadeus Mozart ( 1756 – 1791 ), wrote harpsichord music.

Two of the most dramatic changes were in Iraq's relationships with the Soviet Union and with the United States.

Two chiefly important monk philosophers were Sengzhao and Daosheng.

Two important geographers, Strabo and Pliny, are silent concerning the Angles.

Two other uncommon sources were promoted by Alexander: Anselm of Canterbury, whose writings had been ignored for almost a century gained an important advocate in Alexander and he used Anselm's works extensively in his teaching on Christology and soteriology ; and, Pseudo-Dionysius the Areopagite, whom Alexander used in his examination of the theology of Orders and ecclesiastical structures.

Two chiefly important monk philosophers were Sengzhao and Daosheng.

Two independent sources attribute Dobrawa's important role in the conversion to Christianity of Mieszko I and Poland.

Two important principles of constraint-induced aphasia therapy are that treatment is very intense, with sessions lasting for up to 6 hours over the course of 10 days and that language is used in a communication context in which it is closely linked to ( nonverbal ) actions.

Two Cities Films, an independent production company also made some important films including This Happy Breed ( 1944 ), Blithe Spirit ( 1945 ) and Sir Laurence Olivier's Henry V ( 1944 ) and Hamlet ( 1948 ).

Two important consequences of the functor axioms are:

Two important payments are made to a franchisor: ( a ) a royalty for the trademark and ( b ) reimbursement for the training and advisory services given to the franchisee.

Two prominent Canadian authors ( both very hostile to the " Chicago School " philosophy ) argue that government at times has to intervene to ensure competition in large and important industries.

Most important of these heavens was Omeyocan ( Place of Two ).

Two important sights on the fairground are the Hermes Tower ( 88. 8 metres high ) and the EXPO Roof, the largest wooden roof in the world.

Two important aspects of a concise language are as follows: First, the most common words ( e. g., " a ", " the ", " I ") should be shorter than less common words ( e. g., " roundabout ", " generation ", " mediocre ",) so that sentences will not be too long.

Two key assumptions underlie this cognitive approach: ( 1 ) that the memory system is an active organized processor of information and ( 2 ) that prior knowledge plays an important role in learning.

Two other important biographies were written by the king's confessor, Geoffrey of Beaulieu, and his chaplain, William of Chartres.

" Two examples of such " pushing " are particularly important in the magnetosphere.

Two different types of cost are important in microeconomics: marginal cost, and fixed cost.

Two of Ludovico's daughters married to relevant figures: Geronima to Pier Luigi Farnese, illegitimate son of Pope Paul III and Marzia to Gian Giacomo Medici of Marignano, an important general of the Spanish army.

Two important classes are organolithium and Grignard reagents.

* Number Two has an important role in offence, either running through and scoring themselves, or passing to the Number One and getting in behind them.

" Two important types of future interests are:

Two of the important motorways are the A1, running from St. Margrethen in northeastern Switzerland's canton of St. Gallen through to Geneva in southwestern Switzerland, and the A2, running from Basel in northwestern Switzerland to Chiasso in southern Switzerland's canton of Ticino, using the Gotthard Road Tunnel.

Two important events helped promote Shanghai's development in the Ming Dynasty.

Two important authors of short stories in the German language were Thomas Mann and Franz Kafka.